Description
Tailored for Proton Exchange Membrane Water Electrolysis (PEMWE), the NEPEM Proton Exchange Membrane offers scenario-specific solutions. It splits into two series: the 11X Series, engineered for large-scale industrial hydrogen production, and the 11X W Series, designed for hydrogen-related health applications. Boasting high proton conductivity to ensure efficient ion transport, low gas permeability (minimizing H₂ and O₂ crossover), and strong high-pressure resistance, this membrane delivers reliable, stable performance across diverse PEMWE research and industrial setups.
NEPEM Proton Exchange Membrane
For PEMWE Applications
Thickness and Weight Properties
| Membrane Type | Thickness (μm) | Weight (g/m²) |
|---|---|---|
| N-115 | 125 | 246 |
| N-117 | 175 | 345 |
| N-1110 | 220 | 432 |
| N-115W, N-116W, N-117W | 125, 150, 175 | 246, 295, 345 |
Physical Properties
| Physical Properties | Index Parameters – N-11 Series | Index Parameters – N-11W Series |
|---|---|---|
| Tensile Test (23°C, 50% RH) | N-11 Series | N-11W Series |
| Tensile Strength (MPa) | ≥28 | ≥28 |
| Tensile Modulus (MPa) | ≥400 | ≥200 |
| Elongation at Break (%) | ≥120 | ≥200 |
| Specific Gravity | 1.97 | 1.98 |
| Other Properties | Index Parameters | |
| Conductivity (S/cm) | ≥0.100 | ≥0.100 |
| Acid Capacity (meq/g) | 1.00±0.05 | 1.00±0.05 |
| Dissolved Hydrogen Concentration (ppb, Max) | 1000 | |
Hydrolytic Properties
| Hydrolytic Properties | Technical Indicators – N-11 Series | Technical Indicators – N-11W Series |
|---|---|---|
| Water Content (%) | 5.0±3.0 | 5.0±3.0 |
| Water Uptake (%) | 50.0±5.0 | 50.0±5.0 |
| Thickness Change (23℃, 50% RH) (% Increase) | ||
| – Water Soaked at 23℃ (50% RH, %) | ≤5 | ≤18 |
| – Water Soaked at 100℃ (50% RH, %) | ≤15 | ≤30 |
| Linear Expansion (23℃, 50% RH) (% Increase) | ||
| – Water Soaked at 23℃ (50% RH, %) | ≤5 | ≤16 |
| – Water Soaked at 100℃ (50% RH, %) | ≤18 | ≤20 |
Measurement Notes:
- Measurements were taken with the membrane conditioned at 23 °C and 50% relative humidity (RH).
- Conductivity measurements were performed at 23 °C and 100% relative humidity (RH).
- A base titration procedure is used to determine the equivalents of sulfonic acid groups in the polymer resin, which is then applied to calculate the acid capacity or equivalent weight of the membrane.
- Dissolved hydrogen concentration was measured using a hydrogen-rich water test pen (ENH-1000 Portable Dissolved Hydrogen Meter), based on the principle of oxidation-reduction potential (ORP) in the solution to calculate the dissolved hydrogen concentration.
- Water content of the membrane (dry weight basis) was determined with the membrane conditioned at 23 °C and 50% relative humidity (RH).
- Water uptake (dry weight basis) was measured by conditioning the dry membrane in water at 100 °C for 1 hour.
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